Exercise has been shown to lengthen lifespan by as much as five years. A small new study suggests that moderate-intensity exercise may slow down the aging of cells. As humans get older and their cells divide over and over again, their telomeres—the protective caps on the end of chromosomes—get shorter. To see how exercise affects telomeres, researchers took a muscle biopsy and blood samples from 10 healthy people before and after a 45-minute ride on a stationary bicycle. They found that exercise increased levels of a molecule that protects telomeres, ultimately slowing how quickly they shorten over time. Exercise, then, appears to slow aging at the cellular level.

Lie on your back with the left leg extended and the right knee bent. Place the right foot on the floor and extend the right arm toward ceiling. Perform a crunch-like movement to lift the upper body, transitioning into a seated position, and continue to reach the right arm up. Place the left hand on the floor next to the left hip and push through the left hand and the right foot to lift the hips off the floor. Extend through the hips, reaching back with the right arm to perform a slight backbend. Slowly lower back down to the starting position. Repeat five to six reps on the right side before switching to the left.
You probably have a vague sense that exercise is good for you—and you’ve probably heard that it’s “healthy for the heart.” But if you’re like most people, that’s not enough motivation to get you to break a sweat with any regularity. As I report in the TIME cover story, “The Exercise Cure,” only 20% of Americans get the recommended 150 minutes of strength and cardiovascular physical activity per week, more than half of all baby boomers report doing no exercise whatsoever, and 80.2 million Americans over age 6 are entirely inactive.
Not feeling up to heavy lifting? Try doing more reps at a lower weight instead and you’ll be kissing that arm fat goodbye in no time. Researchers at Canada’s McMaster University studied a group of 20-something men over a 12-week period, with half the study subjects lifting heavy weight and doing low reps, and another group lifting lighter weights for higher reps. The Journal of Applied Physiology study found that both groups increased their strength and muscle size by approximately the same amount, so if you’re relatively new to lifting or don’t feel up to hitting the heavy weights just yet, don’t worry; lighter lifts will still help you ditch the fat while gaining muscle tone.
These beneficial effects in turn decrease the risk of heart attack, stroke, and coronary artery disease. In addition, colon cancer and some forms of diabetes are less likely to occur in people who exercise regularly. In short, regular exercise is one of the best things that people can do to help prevent illness, maintain healthy body weight, preserve health and longevity, and enhance quality of life.
Love 'em or hate 'em, you can't talk about ultra-effective no-equipment exercises without mentioning burpees (especially when there's a push-up incorporated). "The burpee with push-up is a full-body exercise that works your core, arms, quads, glutes, and hamstrings," explains Harbison. "[They also] rapidly increase your heart rate, especially if you add an explosive jump at the end of the movement." Strength, check. Cardio, check.
Take a towel—technically not gear!—and run it underneath the seat of a chair—also technically not gear!—and, with the back of the chair facing away from you, do a set of biceps curls. This works only with standard, four-legged chairs in the 10-to-15 pound range, although if you can figure out how to manage it with your caster-mounted office chair, more power to you.)
Flabby arms can ruin your confidence – and your looks. Some men and women are genetically predisposed to carry fat in this area. Luckily, there are ways to slim your arms and improve muscle tone without even leaving home. Just keep in mind that you can't spot reduce fat. You need to eat clean and work your whole body to get results. Certain exercises, especially those targeting the triceps, are particularly beneficial.
And exercise stimulates the endocrine system and can improve reproductive function, explains Berger. The endocrine system is made up of glands that secrete hormones in the body; this system plays a key role in regulating metabolism, mood, tissue function, and sexual function. Bottom line: There are a lot of ways your sex life can get a boost from working out.
We have all heard it many times before - regular exercise is good for you, and it can help you lose weight. But if you are like many Americans, you are busy, you have a sedentary job, and you haven't yet changed your exercise habits. The good news is that it's never too late to start. You can start slowly, and find ways to fit more physical activity into your life. To get the most benefit, you should try to get the recommended amount of exercise for your age. If you can do it, the payoff is that you will feel better, help prevent or control many diseases, and likely even live longer.
When she's working out sans equipment, Marraccini's favorite exercises are all things core-related. "A strong core never goes out of style," says Marraccini. This makes sense, considering that having a strong and stable core is essential for both everyday movements as well as exercising. While regular crunches really only target the upper portion of your abdominals, runner's crunches work your entire core as you sit all the way up, including your obliques, lower back, hip flexor muscles, and rectus abdominis (which is what you probably think of when you think "six-pack" muscles).
“Push-ups are a great exercise that can be done regressively or progressively. Adding things like shoulder taps, mountain climbers, or even negatives are great ways to add more effectiveness to push-ups done without weight,” explained Septh. Similarly, Barajas mentioned a change simple as switching up your hand placements (wide, narrow, etc.) will work different parts of the muscles.
Protein and fat loss go hand in hand. This nutrient supports muscle growth and raises your metabolism, making it easier to slim down. It also promotes satiety and reduces hunger, so you'll eat less without even realizing it. The American Journal of Clinical Nutrition states that high-protein diets can positively impact appetite, cardiometabolic risk factors, body weight and other factors.
The single arm lateral raise is a power packed arm toning exercise that helps to lose fat fast from the arms and cuts out the jiggle. This exercise is also effective in strengthening the core muscles. Begin in a push-up position with knees and hands placed directly under the shoulders, holding a 600 ml water bottle or any similar weight in the left hand.
Challenge yourself with 2-2-2 push ups. If you feel comfortable with tricep push ups, you may want to try a variation on tricep pushups. The “2-2-2” push ups refer to 3 sets of 2 push ups using different hand placements: narrow, regular, and wide. The narrow push ups will work your tricep muscles and the wide push ups will work your chest muscles.[3]
Complete sit-up pullovers. Sit-up pullovers will work your triceps and abs and help you burn fat. Hold a weight in each hand and lie on an exercise mat with your arms extended directly above you. With your knees bent and your feet flat, slowly curl your body up to lift your head, shoulders, and back off the ground. Keep your arms up and move them in a smooth arc-like motion towards your knees. Hold this position for one second, then lower yourself back down. Do 2-3 sets of 10-15 reps.[4]
So, here’s how to lose arm fat: Stand holding the dumbbells at your side, palms facing forward. Your posture and form is important, so keep your back straight and chest up. Lift your arms straight up until they’re at a 90-degree angle to your trunk. Now curl the weights to your shoulder as you count to three, then straighten to a count of three. Lagree recommends doing three sets of 20 repetitions. Don’t miss this 15-minute strength training routine that works your whole body.

HOW TO DO IT: Step to your left and lower your body into a lateral lunge, placing both hands on the floor. Without moving your feet, lift your hands and hips and shift your weight over your right foot, so you end up in a right-side lunge. Alternate back and forth for 30 to 60 seconds. To really kick up the burn, turn this movement into a monkey shuffle by simultaneously loading your hands, lifting your hips and shuffling your feet side-to-side between right and left lunge positions.


Exercise acts as a temporary diversion to daily stresses and it improves self-esteem. Increased core temperature during exercise may lead to reduced muscle tension and favourable alterations in brain neurotransmitters. Mood improvements may also occur due to the increased secretion of endogenous (internal) opiates, e.g. endorphins. Psychological changes may occur because of changes in norepinephrine, dopamine and serotonin, all hormones which can affect mood and anxiety levels.
Ever hit the hay after a long run or weight session at the gym? For some, a moderate workout can be the equivalent of a sleeping pill, even for people with insomnia Effects of moderate aerobic exercise training on chronic primary insomnia. Passos GS, Poyares D, Santana MG, D’Aurea CV, Youngstedt SD, Tufik S, de Mello MT. Department of Psychobiology, Universidade Federal de Sao Paulo, Sao Paulo, Brazil. Sleep Medicine. 2011 December;12(10):1018-27.. Moving around five to six hours before bedtime raises the body’s core temperature. When the body temp drops back to normal a few hours later, it signals the body that it’s time to sleep Effects of exercise on sleep. Youngstedt SD. Department of Exercise Science, Norman J. Arnold School of Public Health, University of South Carolina, Columbia, SC, USA. Clinical Sports Medicine. 2005 April;24(2):355-65..
But the idea that banging out a workout when you don't have access to your usual equipment or space is one that trainers are quick to debunk. Sure, they know their way around a gym floor and a smart workout program, but they also know that when you're traveling, ultra busy, or just don't feel like dealing with the gym, a routine of challenging bodyweight exercises will get the job done.
“Push-ups are a great exercise that can be done regressively or progressively. Adding things like shoulder taps, mountain climbers, or even negatives are great ways to add more effectiveness to push-ups done without weight,” explained Septh. Similarly, Barajas mentioned a change simple as switching up your hand placements (wide, narrow, etc.) will work different parts of the muscles.

Endorphins, amiright? The link between exercise and happiness has been well-studied, and the results are very positive (just like you’ll be after some gym time). One study from the University of Vermont found that just 20 minutes of exercise can boost your mood for 12 hours. Cardio and strength training can both give you a lift, and 30-60 minutes of exercise three to five days a week is optimal for mood benefits, according to the U.S. Office of Disease Prevention and Health Promotion.
The body uses both carbohydrates and fats as energy sources. But after consistent aerobic exercise training, the body gets better at burning fat, which requires a lot of oxygen to convert it into energy. “One of the benefits of exercise training is that our cardiovascular system gets stronger and better at delivering oxygen, so we are able to metabolize more fat as an energy source,” Hackney says. As a result, your fat cells—which produce the substances responsible for chronic low-grade inflammation—shrink, and so does inflammation.
Flabby arms can ruin your confidence – and your looks. Some men and women are genetically predisposed to carry fat in this area. Luckily, there are ways to slim your arms and improve muscle tone without even leaving home. Just keep in mind that you can't spot reduce fat. You need to eat clean and work your whole body to get results. Certain exercises, especially those targeting the triceps, are particularly beneficial.

The skin also serves as a release point for heat. (See “Why Does My Face Turn Red When I Exercise?” for more on that.) When you exercise, your muscles generate a lot of heat, which you have to give up to the environment so your body temperature doesn’t get too high, Hackney says. The heat in the muscle transfers to the blood, which shuttles it to the skin; it can then escape into the atmosphere.
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